Can't connect. Too many connections

Sometimes my connection works. Sometimes I get this error over and over.

[14:33:04] Continue to login attempt 11...
[14:33:04] Resolving host name ""
[14:33:04] Connecting to Port: 21
[14:33:04] Connected to
[14:33:05] 421 Too many connections (8) from this IP
[14:33:05] Server closed connection

What does this mean?

In version 2, how can I limit my connects?

Hello ..

Close all Remote Browser windows: menu: Windows->Close All. Then wait 30 seconds and try again.

Also make sure that the number of workers in the Transfer Queue is set to 1.